How do jellyfish reproduce?

What are some things that limit population growth?

Which of the following are false concerning microbes? a. microbes generate oxygen through photosynthesis.b. the primary role of microbes on the planet involves causing disease in animals and humans.c. microbes produce vitamins in the intestines.d. microbes play a role in breaking down waste and decomposing dead organisms.

Which medullary index indicates a human hair? a. 0.653 b. 0.733 c. 0.516 d. 0.256